Writing the correct formula of the compound is a must in chemistry. Refer Writing formulae section
http://tutorsr.blogspot.com/2013/05/chemical-formulae.html
Stoichiometry is the ratio between the reactants and the products in a chemical reaction. When a chemical equation is balanced properly it is the number we put in front of each reactant and product. If a number is not written it indicates the number infront is 1
Mole concept is used because the atoms and compounds are having really very small weights and sizes. As a result it is not possible to measure them or tell the numbers by using the standard units of measurement.
Next about writing the correct formula of a compound
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Chemical formulaeTo write the correct chemical formula of a compound
1. Identify the elements that makes - Mole conceptHow many molecules of hydrogen is there in 2g of Hydrogen?
1000?
1000000?
10000000000?
No
- Empirical formulaEmpirical formula is the simplest (smallest) ratio of the each type of atom in a formula.
- Structure and properties of materialsProperties of all substances we come across in chemistry is based on their structure
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